120021141 has 4 divisors (see below), whose sum is σ = 160028192. Its totient is φ = 80014092.

The previous prime is 120021137. The next prime is 120021191. The reversal of 120021141 is 141120021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 120021141 - 2² = 120021137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20003521 + ... + 20003526.

It is an arithmetic number, because the mean of its divisors is an integer number (40007048).

Almost surely, 2^120021141 is an apocalyptic number.

It is an amenable number.

120021141 is a deficient number, since it is larger than the sum of its proper divisors (40007051).

120021141 is an equidigital number, since it uses as much as digits as its factorization.

120021141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40007050.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 120021141 is about 10955.4160578227. The cubic root of 120021141 is about 493.2713788261.

Adding to 120021141 its reverse (141120021), we get a palindrome (261141162).

It can be divided in two parts, 120021 and 141, that multiplied together give a palindrome (16922961).

The spelling of 120021141 in words is "one hundred twenty million, twenty-one thousand, one hundred forty-one".